Toothbrush having a resilient neck and conical brush bundles
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United States of America Patent
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Aug 29, 2000
Grant Date -
N/A
app pub date -
Mar 2, 1998
filing date -
Sep 8, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A toothbrush in accordance with the invention includes a plastic brush body having a head, a neck and a handle, as well as bristle bundles fixed to the head, the free ends of the bristles of at least part of the bundles are located on an approximately conical envelope surface with a cone angle .alpha. of 30 to 90.degree. and the neck of the brush body in the case of an application force K between 500 to 1200 grams acting on the bristles resiliently to give way with the cone angle .alpha. and the application force K being approximately inversely proportional.
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